-
Local Free & Fast Delivery
-
24/7 Online Support
-
30-Day Return & Refund
-
5-Year Free Wararnty
- Smart Bluetooth
- Low-temp Cutoff
Humsienk 12V 640Ah Bluetooth LiFePO4 Battery with 250A BMS
Lock in the lowest price of 2026! Upgrade your home solar storage or off-grid power setup before prices return to regular retail.
24.92 x 9.53 x 8.58 in | 111.88 lbs
- Long-lasting, lower replacement cost: 6000 Cycles @80%DOD, far exceeding lead-acid batteries and reducing long-term usage costs.
- Bluetooth smart control, battery status known anytime: APP monitors SOC, voltage, temperature and other key data in real time.
- 250A BMS + 6 layers of protection to guard against electrical risks: 300A Peak Discharge Current, effectively reducing thermal runaway hazards and ensuring safe high-power discharge.
- 640Ah huge capacity, 8192Wh ultra-long endurance: Energy density over twice that of same-size lead-acid batteries, easily powering RV air conditioners, boat motors and other high-power devices.
- Multi-scenario adaptability, covering all high-power needs: Suitable for RVs, off-grid storage, boats, horticultural equipment and 90% of energy storage scenarios, better matching high-power long-term supply demands.
- 3 charging methods, more flexible recharging: Supports charger, solar panel, generator charging; fully charges in 12.8 hours.
- Easy-install design, compatible with existing systems: M8 terminals compatible with existing lead-acid battery systems, square design saves installation space and can be handled by one person.
- 4S4P: Expandable to 131 kWh family-scale large-capacity storage to meet long-term off-grid or backup power needs for households.
- Wide temperature adaptability, stable operation from -4°F to 149°F: Can discharge normally in low temperatures and won’t fail in high temperatures, suitable for various regional climates.
Hurry! Only--items left in stock!
Special Add-Ons
Humsienk 12V 60A AC-DC LiFePO4 Battery Charger
Humsienk 4AWG 11-Inch Battery Cable for Series/Parallel Connection
Shop early with total peace of mind! If you purchase any Humsienk product today and the price drops on our official store within 30 days of your purchase, we will gladly refund you the price difference.
- Zero Risk Shopping: Lock in your favorite power setup now before inventory runs out.
- Hassle-Free Price Adjustment: Simply reach out to our customer support team with your order number, and we’ll process your price match refund within 24–48 hours.
- 100% Protection: Valid across all Black Friday & Cyber Monday promotional discounts.
We want you to be completely satisfied with your purchase. HUMSIENK offers a 30-Day Money-Back Guarantee for all orders, allowing you to return or exchange eligible products within 30 days of delivery.
1. Eligibility for Returns
- Timeframe: Return requests must be initiated within 30 days from the date you received your item.
- Item Condition: Items must be in brand-new, unused, and resalable condition, complete with all original packaging, manuals, power cords, and accessories.
- Non-Returnable Items: Custom/special orders, final sale items, or products damaged due to improper installation or misuse are not eligible for non-reason returns.
2. Return Shipping Costs
- Buyer’s Remorse (Change of Mind / Non-Quality Issue): If you are returning an item for personal reasons (e.g., bought by mistake, no longer needed), the customer is responsible for the return shipping fees and any associated LTL freight/restocking charges.
- Defective or Damaged Items: If the product is defective upon arrival or damaged during transit, HUMSIENK will provide a prepaid shipping label and cover all return/exchange costs.
3. How to Initiate a Return
- Contact Support: Email our customer service team at service@humsienk.com with your Order Number, product serial number, and reason for return.
- Receive RMA & Return Address: Our support team will review your request within 24–48 hours and provide Return Merchandise Authorization (RMA) instructions and the local warehouse return address.
- Ship & Track: Package the item securely and share the return tracking number with us.
4. Refund Processing
Once your return is received and inspected at our local US/CA warehouse, your refund will be processed within 3–5 business days. Refunds will be automatically credited to your original payment method.
- Contiguous US Free Shipping: Enjoy 100% Free Shipping on all orders delivered within the contiguous United States — no minimum purchase required.
- Hawaii (HI) Shipping: Deliveries to Hawaii are supported with a flat shipping fee of $1,000 per order.
- Local Warehouse Delivery: All items are stored in and dispatched directly from our local US logistics centers for fast, reliable transit.
- Rapid Order Processing:Standard Express Items: Orders are processed and dispatched within 24 business hours. Tracking numbers are automatically emailed upon shipment.
- In-Stock Standard Express Delivery: Estimated 2–5 Business Days (Contiguous US) (Excludes presale items).
LTL Freight & Heavy Cargo Delivery:
- Applicable Models: 48V 300Ah, 48V 314Ah, and 48V 628Ah battery systems, as well as 48V Bundles/Kits.
- Split Shipment for 48V Bundles: For 48V Bundle systems, items will be dispatched in separate packages via LTL freight—typically Package 1 for the Battery System and Package 2 for Inverters & Accessories. Packages may arrive together or in separate deliveries based on logistics handling.
- Processing & Transit Time: 3–7 Business Days. Please note that LTL shipments require 1–2 business days prior to dispatch for recipient verification, rate finalization, and carrier scheduling. Liftgate service is included.
- Manual Tracking Support: As heavy freight operates outside standard express parcel networks, online auto-tracking may be limited. For real-time status updates on your freight shipment, please contact us at service@humsienk.com.
At Humsienk, we stand behind the quality and performance of our energy storage solutions. We offer flexible warranty coverage based on product category:
- Refurbished / Second-Hand Batteries: 1-Year Limited Warranty
- Accessories & Components: 1-Year Limited Warranty
- Inverters: 2-Year Limited Warranty
- 12V LiFePO4 Batteries (8Ah – 50Ah): 3-Year Limited Warranty
- All Other Battery Systems: 5-Year Limited Warranty
Activate Your Warranty
To ensure full coverage and access fast-track customer support, please register your product serial number via our official Humsienk Warranty Registration Page.
-
Local Free & Fast Delivery
-
24/7 Online Support
-
30-Day Return & Refund
-
5-Year Free Wararnty
The Energy Vault: 4x Humsienk 12V 640Ah Batteries (48V Configuration)
Take your energy independence to the absolute limit. By combining the cutting-edge management of the EcoFlow DELTA 3 with a massive, heavy-duty bank of four HumsiENK 12V 640Ah LiFePO4 batteries configured in a high-efficiency 48V setup, you aren’t just building a backup system—you are building a private utility grid. Whether you are powering a large off-grid cabin, an expansive overland rig, or securing your home with a bulletproof emergency backup, this setup delivers unmatched capacity and seamless smart control.
Humsienk 12V 640Ah High Performance LiFePO₄ Battery – 8192Wh, 250A BMS, Lightweight 109 lbs for RV & Solar
The Humsienk 12V 640Ah LiFePO₄ battery delivers a staggering 8192Wh of clean, reliable energy – enough to power your RV, off‑grid home, or marine system for days. Despite its massive capacity, it weighs just 109.02 lbs – significantly lighter than lead‑acid alternatives, making installation and handling effortless. With 6000+ deep cycles and a 10‑year lifespan, this maintenance‑free battery offers exceptional value for RVs, campers, marine vessels, off‑grid solar, and home backup.
Mechanical | Shell Type ABS | Size 635 x 244 x 218 mm / 25.00 x 9.61 x 8.58 in |
Weight 50.75+0.5kg/111.88+1.10 lb | Nominal Voltage 12.8V | |
Nominal Capacity 640Ah | Energy 8192Wh | |
Electrical Characteristics | Terminal M8 | Cycle Life 6,000@DOD80% |
Months Self Discharge s3%/Month | Efficiency Of Charge 100%@0.2C | |
Efficiency Of Discharge 96~99%@0.5C | Charge Voltage 14.4V+0.2V | |
Standard Charge/Discharge | Charge Mode CC/CV | Charge Recommended Current 128A |
Max. Continuous Charge Current 250A | Discharge Recommended Current 200A | |
Max. Continuous Discharge Current 250A | Discharge Cut-Off Voltage 10V | |
Charge Temperature 32°F~131°F/0℃C~55°C | Discharge Temperature -4°F~149°F/-20°C~65°C | |
Environmental | Storage Temperature -4°F~113°F/-20°C~45°C | Ingress Protection Rating IP65 |
Package List & Data Sheet
What's in the Box
12V 640Ah
×1
User Manual
×1
M8 Terminal Bolts
×2
Plastic Insulation Cap
×2
Product Documents
12V 640Ah
User Manual & Specification Sheet · English PDFs
Which Battery Fits Your Setup?
| Product |
12V 300AhBluetooth |
12V 314AhMini |
12V 320AhBluetooth |
12V 640AhBluetooth |
| Capacity | 3.84kWh | 4.01kWh | 4.09kWh | 8.19kWh |
| Dimensions | 20.51 x 9.37 x 8.57 in | 15.08 x 7.60 x 8.66 in | 20.55 x 9.37 x 8.58 in | 24.92 x 9.53 x 8.58 in |
| Weight | 61.73 lbs | 58.42 lbs | 59.75 lbs | 109.02 lbs |
| BMS Current | 200A | 200A | 250A | 250A |
| Bluetooth | ||||
| Max Power | 2560W | 2560W | 3200W | 3200W |
| IP Rating | IP65 | IP65 | IP65 | IP65 |
| Best Application | RV, Trolling Motor, Home Storage | RV, Trolling Motor, Home Storage | RV, Trolling Motor, Home Storage | RV, Trolling Motor, Home Storage |
| Price (USD) | $389.99 USD | $459.99 USD | $499.99 USD | $849.99 USD |
Customers praised this 12V 640Ah LiFePO4 battery for its massive capacity and excellent value. Shoppers noted "BEAST Power" and appreciated the Bluetooth app for easy monitoring. The battery is described as "built like a tank" with fast delivery. Some noted it's heavy at 110lbs but called this a positive. Most reviews are recent with limited longevity data.
i love it! it is superb and works wonderfully! Thank you Humsienk! you guys are the best.
Todo bien
I have only had the battery for a few weeks but it exceeds my expectations so far ... it arrived in perfect shape - bluetooth is cool -price is good ! It is so much better and lighter then the the old battery . Planning for another one next year.
Received my 12v 160Ah Plus battery, impressed before I opened the box, well labeled and very sturdy 2" foam top and bottom, no wonder it arrived safely. Ready to charge and install, manual and terminal hardware right there. Now the reason I chose the 160 Ah Plus having limited space two 160's gives 320 Ah that's like over 3 100 Ah battery's and at a good price makes the Humsienk 12V 160Ah Plus the clear winner, space, power, cost so yes I am going to buy another!!! THANKS!!!!!!!!
THESE ARE EXCELLENT BATTERIES. I'VE BEEN USING THEM FOR ABOUT A YEAR NOW SUPPLYING NIGHTTIME POWER, CHARGED BY MY SOLAR PANELS DURING THE DAY. NO PROBLEMS.
Excellent Battery — Exceeded Rated Capacity
I recently purchased a Humsienk 12V 314Ah LiFePO4 battery, and I have been extremely impressed with both the battery and the service.
The battery arrived in excellent condition only 3 days after I placed the order. It measured 13.1 volts right out of the box. I fully charged it and then performed a capacity test. To my surprise, it delivered 328Ah—14Ah more than its advertised 314Ah capacity. That’s approximately 105% of the rated capacity, which is excellent performance.
This isn’t my first experience with Humsienk. This is the fifth Humsienk battery I own, so my recommendation is based on repeated experience with their products, not just one purchase. I’ve continued buying them because I’ve been very satisfied with the performance and value.
Communication with the seller was also excellent, and the exceptionally fast delivery was a big plus.
Based on my experience with five Humsienk batteries, I can highly recommend this battery and this company. I thoroughly test the batteries I purchase rather than simply relying on the specifications, and this 314Ah battery exceeded its advertised capacity.
I would gladly purchase another one and put it through the same full charge and capacity testing.
5 out of 5 stars. Highly recommended
Great battery! Used for my trolling motor.
Love it exceeded my expectations.
i installed it in my house to provide me with power during emergencies. we started having alot of power outtage here in the last few years and we cannot rely on the grid anymore. something is going on and we must prepare before it is too late.
this battery has TONS of electricity stored inside. i can run my water pump, lights, computers, fans... everything! its totally silent and doesnt emit gasses like lead acid batteries. also the energy density is incredible and the price is very low. when the grid goes down i can continue to live like before. it totally reduced my stress and i sleep way better now knowing that i have not only a reserve of food, but electricity.
Used for my truck camper ( @gordie_the_galloper ) running a 60L fridge, inverter, Starlink, string lights and misc items (Laptop, phone, tablets et al)
It gives me 4 days of use down to 20%
Paired with a 20A ac charger for filling when back home. I now have a 150W fold-out panel with a PWM charger for the next trip to see if I can keep the battery topped up.
Diesel heater, toaster and maybe an air frier next
So far so good
Only disappointment is the Bluetooth only connects within 2m of the truck
These batteries ARE GREAT! I purchased 2 of them, ran them in parallel in our camper. We went on a 4 day trip with 6 people in our camper. We out the batteries to the test. Water pump, all the lights you make it we ran it. At the end of our trip the batteries were at 95%! Holy crap for real! The Bluetooth feature is amazing as well. I checked the batteries often just cause and man am I impressed! Great batteries and features!
Can you please call me at [****] I need to buy a charger for the batteries I bought from your company what kind of charger I have to buy and is there’s a charger works on 12 volt
Finally got a chance to use our rv and came away happy with the battery we install this year. It is and does what was promised Bluetooth work great and does everything I need. I received and charged the battery a month before using it and it stayed fully charged.
Replaced 2 deep cycle batteries with this LifePo4 324MH bluetooth battery for our GeoPro trailer and it worked really great. We did buy a battery charger to get it to 100% as it came in at 57%. Once fully charged it powered our RV for the long weekend no problem and full recharged with our solar panel each day. It also worked well to charge our laptop in the RV with the inverter and didn't deplete the battery very much. The app works well. The only downside is you need to be near the battery for the blue tooth connection to the app to work and it seems to disconnect easily. Not a huge deal. Overall pleased. Will see how it works for longer boondocks stays.
Great product and full of energy
I am happy with this performance
Great fishing day
Jacques Lamoureux
Humsienk is a very good company. I found the quality of these batteries to be very good. I reached out to them for some information and received answers to all of my questions. This is a company that can be trusted.
I’ve had 2 of these running for a couple of months on a12 volt solar system and they work great from 24/7 refrigerator to coffee pot vacuum cleaner and any other appliance we’ve plugged in
I can't tell you how happy I am with these batteries. They came well balanced out of the box, but I still connected them in parallel for a couple days to get the Voltage as tight and consistent as possible before installation. I used them in a small ebike car and they work perfectly. Humsienk is creating high quality batteries at an affordable price - and I hear their customer service is good too. Humsienk is seriously positioning themselves as a leader in the industry. If I need batteries again, I'll definitely be buying from them.
